Looking much like the original Cadillac Converj concept we saw in 2009, the Cadillac ELR uses a 16.5-kilowatt-hour battery pack and can travel up to 35 miles in pure electric mode before the 1.4-liter gasoline-powered generator kicks in. The generator extends the range of the ELR to 300 miles.

Watch as Autoweek road test editor Jonathan Wong shares more details about the Cadillac ELR from the Detroit auto show floor.